Oldcarkook, I read the article and other threads, I got no problem admiting I am a novice and no mechanic. I also take about everything that old mechanic ever told me as the gospel. However he as been retired quite a while now and as I read this is recent stuff. After reading your info and the other articles, I think I will be looking for Rotella. Being a novice, I was just expressing my opinion and did not mean to give falting info to anyone. Anyway thanks for that info, Tom.